I am glad to hear that the rockerball works well, as you described. I would be curious how much difference it might make on some of those concrete roadways which have a wave built in. I find those stretches of highway really annoying.
Do you leave that hook-up mirror in place while traveling? How well is that working out?
I tried a mirror that was attached temporarily to the hitch in the bed and provided a view of the ball from above, but storing and installing was a pain. Now I use what is basically two sticks with magnets at the end. One is held on the hitch forward of the ball, the other on the coupler latch. They get slipped inside the crosswise tube of the Scamp
frame, so they are easy to retrieve and put away. It is the same idea as those sticks with tennis balls, but made of leftovers from ancient projects that I worked on long time ago.